Instant Hot water Heaters

[johne]

I am in the market for a electric tankless hot water heater. Here are some of my questions that users with experience might help me with.
I want use of hot water in two principal bathrooms and one kitchen. Two story house occupied by two adults.
What size unit should I be looking at?
I would prefer the Rheem brand as I have used their tanks in the US for years. So far I only came across one store that has one (all among other brands).

I also came across a unit that my electrician says is good. That is DRIJA 21.5l with inverter. Priced at 26,300.

Your thoughts,advise, suggestions appreciated.

 

[lifeisgreat]

I find after 5-6 yrs they gunk up and just change by what friends here say and personal experience last one ge 6 yrs flow valve works doesn't changed out with new one from Amazon for 150 bucks works great well water with mine screws flow valve for demand ..personals wouldn't spend 26000 peso on one that ednorte or water would mess up in time.(3bdrm house 7kw one i have)

 

[JD Jones]

Whatever model you buy, get yourself a couple of inline filters to keep them clear of minerals and debris.

I went with an el cheapo model from a local ferreteria that worked great.

 

[AlterEgo]

Our NJ home has one large on demand water heater (3 bathrooms, washer, etc). Our DR home has three individual heaters (Lorenzeti, bought in DR). One for each bathroom, and one that the kitchen and washing machine share. I prefer it that way, trouble with one means I still have a hot shower in another.

 

[josh2203]

Our NJ home has one large on demand water heater (3 bathrooms, washer, etc). Our DR home has three individual heaters (Lorenzeti, bought in DR). One for each bathroom, and one that the kitchen and washing machine share. I prefer it that way, trouble with one means I still have a hot shower in another.

Individual on demand heaters are better in my opinion as well, as if you have one heater for the whole house, the heater will first have to heat the water in the pipes going to the tap and even though not much, you have always a bit of hot water wasted. The closer the tap, the most efficient possible in the sense of electricity consumption. In my dad's house there is an electric water heater with storage (300L, so a bit less than 100 GLS) right in the main bathroom (because there is room), the kitchen being just on the other side of the wall, so the waste is minimum.

 

[JD Jones]

A lot depends on whether you have a LP gas heater or an electric heater.

In my case, I have a 20 gal heater with a timer switch. 20 minutes before a take a shower, I set it for 20 minutes and I'm good to go.

 

[Notengo]

We have a cheap tankless Inlec heater. Readily available for around 6000dop. It does 2 bathrooms mounted in a walk-in closet where the connections are. In standby it automatically shuts on/off when a hotwater tap is opened/closed and heats up fast. Maintains the heat fine at higher volume (pump assist). Easy temperature setting.
The initial install was horrible though. It is a 220V unit which the plumber connected to 110V and wired the (included) breaker wrong. I found that out after the unit tripped a main breaker a few times after about 5 minutes. After a restart it would still work again, I expected it to be fried but it could take it so I am impressed about that.

So make sure you have the matching voltage and proper thick wires all the way to the main breaker. And DIY because many plumbers have incompetent as their first name. I put a ban on him.